#include <iostream>
#include <cstdlib>
using namespace std;
int n;
int a;
int b;
int cuksy[20];
int iloczyn [20];
int taba[20];
int tabb[20];
int main()
{
cin>>n;
if(1<=n&&n<=20)
{
for(int i=0;i<n;i++)
{
cin>>taba[i]>>tabb[i];
if(10<=taba[i]&&10<=tabb[i]&&taba[i]<=30&&tabb[i]<=30){}
else exit(0);
}
for(int i=0;i<n;i++)
{
iloczyn[i]=taba[i]*tabb[i];
if(taba[i]>tabb[i])
{
taba[i]=taba[i]-tabb[i];
cuksy[i]=iloczyn[i]/taba[i];
cout<<cuksy[i]<<endl;
}
else if(tabb[i]>taba[i])
{
tabb[i]=tabb[i]-taba[i];
cuksy[i]=iloczyn[i]/tabb[i];
cout<<cuksy[i]<<endl;
}
else
{
cout<<tabb[i]<<endl;
}
}
}
return 0;
}
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